<!-- components/custom-payment/custom-payment.vue -->
<script lang="ts" setup>
import { ref } from "vue"

// 在线支付弹层
const paymentPopup = ref()

// 打开弹层
const open = () => {
  paymentPopup.value.open()
}
// 关闭弹层
const close = () => {
  paymentPopup.value.close()
}

// 开放关闭和显示弹层的方法
defineExpose({ open, close })

// 支持两个自定义属性，orderId、amount
defineProps<{
  /** 订单ID */
  orderId: string
  /** 实际支付金额 */
  amount: number
}>()

// 支付渠道的索引
const channelIndex = ref(0)
// 支付渠道（方式）
const paymentChannel = [
  {
    title: "微信支付",
    thumb: "/static/images/wechatpay-icon.png",
  },
  {
    title: "支付宝支付",
    thumb: "/static/images/alipay-icon.png",
  },
]

// 自定义事件，用于数据 子传父
const emit = defineEmits<{
  /**
   * 支付确认
   * @param index 支付渠道的索引
   */
  confirm: [index: number]
  /** 取消支付 */
  close: []
  /**
   * 支付渠道切换
   * @param index 支付渠道的索引
   */
  change: [index: number]
}>()

// 支付渠道切换
const changeChannel = (index: number) => {
  channelIndex.value = index
  emit("change", index)
}
</script>
<template>
  <uni-popup :is-mask-click="false" ref="paymentPopup" type="bottom">
    <view class="payment-container">
      <view class="payment-header">
        <text class="title">选择支付方式</text>
        <uni-icons
          class="uni-icons-close"
          size="18"
          color="#333"
          type="closeempty"
          @click="$emit('close')"
        />
      </view>
      <view class="order-amount">¥ {{ Number(amount).toFixed(2) }} </view>
      <uni-list :border="false">
        <uni-list-item
          v-for="(item, index) in paymentChannel"
          :title="item.title"
          :thumb="item.thumb"
          clickable
          @click="changeChannel(index)"
        >
          <template #footer>
            <uni-icons
              v-if="channelIndex === index"
              size="26"
              color="#16C2A3"
              type="checkbox-filled"
            />
            <uni-icons v-else size="26" color="#d1d1d1" type="circle" />
          </template>
        </uni-list-item>
      </uni-list>
      <button class="uni-button" @click="$emit('confirm', channelIndex)">
        立即支付
      </button>
    </view>
  </uni-popup>
</template>

<style lang="scss">
.payment-container {
  min-height: 400rpx;
  border-radius: 30rpx 30rpx 0 0;
  background-color: #fff;
  padding: 10rpx 30rpx 40rpx;

  .payment-header {
    height: 88rpx;
    line-height: 88rpx;
    text-align: center;
    margin-bottom: 20rpx;
    font-size: 32rpx;
    color: #333;
    position: relative;
  }

  .uni-icons-close {
    position: absolute;
    top: 2rpx;
    right: 0;
  }

  .order-amount {
    padding: 10rpx 0 10rpx;
    text-align: center;
    font-size: 40rpx;
    color: #333;
  }

  :deep(.uni-list-item__container) {
    padding: 40rpx 0 !important;
  }

  :deep(.uni-list-item--hover) {
    background-color: #fff !important;
  }

  :deep(.uni-list-item__icon) {
    margin-right: 0;
  }

  .uni-button {
    margin-top: 40rpx;
  }
}
</style>
